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Indeed, I take my hat off to Canon for their CMOS engineering. If they provided pixel binning and an NABG version, then they would have a real solution to work with. I can't imagine Canon would produce a monochrome chip. Commercially its probably not viable considering their goal is to produce chips for "prosumer" cameras in bulk. Typically, users want color images.
Cooling benefits all chip types, that's a given. I'm afraid I won’t be trading-in my STL11k anytime soon. The flexibility of a monochrome chip (even with the low QE of the KAI-11002) and individual band pass filters (either broad or narrow band) is a huge benefit. I can live with noise as this can be remedied through image calibration and frame combining to improve the signal. Actually, you'll probably find that noise is introduced during your image processing routine, so some noise is to be expected.
There are also emerging technologies such as EMCCD which has the potential to combine the benefits of both realms. High sensitivity and low read out noise to state a couple. The horizon looks bright...
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